At Mon, 06 Jul 2015 23:24:20 -0400, Ryan Culpepper wrote:
> On 07/06/2015 10:04 PM, Anthony Carrico wrote:
> > I've been working through Macros that Work Together (on my way to
> > working through Sets-of-Scopes). I've come across something that is
> > slightly unclear to me in the section on local
On Mon, Jul 06, 2015 at 11:53:38PM -0400, Neil Van Dyke wrote:
> David T. Pierson wrote on 07/06/2015 11:27 PM:
> >As a side note, I tried using file-or-directory-permissions [3] to avoid
> >recursing into directories with no read or execute permission, but it
>
> BTW, before anyone does a lot mor
David T. Pierson wrote on 07/06/2015 11:27 PM:
As a side note, I tried using file-or-directory-permissions [3] to avoid
recursing into directories with no read or execute permission, but it
BTW, before anyone does a lot more work on filesystem access control
semantics... I think the usual case
On Mon, Jul 06, 2015 at 02:50:36PM -0700, Russ Abbott wrote:
> I installed Racket in a directory for which I have access. Yet when I
> attempted to run the example code on the Racket Home page:
>
> (for ([path (in-directory)]
> #:when (regexp-match? #rx"[.]rkt$" path))
> (printf "source f
On 07/06/2015 10:04 PM, Anthony Carrico wrote:
I've been working through Macros that Work Together (on my way to
working through Sets-of-Scopes). I've come across something that is
slightly unclear to me in the section on local-expand:
E ::= a mapping from name to transform
I don't believe t
I've been working through Macros that Work Together (on my way to
working through Sets-of-Scopes). I've come across something that is
slightly unclear to me in the section on local-expand:
E ::= a mapping from name to transform
I don't believe that E is a stack (right?). If it isn't, then in
jf
Thanks!
On Jul 6, 2015, at 9:53 PM, Jon Zeppieri wrote:
> Use define/generic:
>
> #lang racket/base
>
> (require racket/generic)
>
> (define-generics foo
> (a foo) (b foo) (c foo)
> #:fallbacks
> [(define/generic gen-a a)
> (define/generic gen-b b)
>
> (define (a foo)
> (displayln
Use define/generic:
#lang racket/base
(require racket/generic)
(define-generics foo
(a foo) (b foo) (c foo)
#:fallbacks
[(define/generic gen-a a)
(define/generic gen-b b)
(define (a foo)
(displayln "a-fallback")
(gen-b foo))
(define (b foo)
(displayln "b-fallback")
What is the proper way to do this?
This goes into an infinite loop:
#lang racket/base
(require racket/generic)
(define-generics foo
(a foo) (b foo) (c foo)
#:fallbacks
[(define (a foo)
(displayln "a-fallback")
(b foo))
(define (b foo)
(displayln "b-fallback")
(a foo
On Monday, July 6, 2015 at 4:31:56 PM UTC-7, Nadeem Abdul Hamid wrote:
> There might be a "Fn" or "Func" key on your keyboard (maybe along the bottom
> row, near the "Ctrl", "Alt", etc. keys) that you need to hold down as you
> press the F1 key; otherwise it treats the key as some Windows shortcu
There might be a "Fn" or "Func" key on your keyboard (maybe along the
bottom row, near the "Ctrl", "Alt", etc. keys) that you need to hold down
as you press the F1 key; otherwise it treats the key as some Windows
shortcut.
On Mon, Jul 6, 2015 at 7:22 PM, P J Moy wrote:
> Hello. In DrRacket, when
Hello. In DrRacket, whenever I place the cursor on a keyword and press F1, the
W8.1 help screen/system comes up (with absolutely useless Windows
documentation.) (I've searched for an hlp file, and nothing.
Any ideas on what is wrong? Any help would be appreciated. Tx.
--
You received this mess
I installed Racket in a directory for which I have access. Yet when I attempted
to run the example code on the Racket Home page:
(for ([path (in-directory)]
#:when (regexp-match? #rx"[.]rkt$" path))
(printf "source file: ~a\n" path))
I got this error message.
Racket\collects\racket\priv
On Sunday, July 5, 2015 at 4:51:22 PM UTC-7, Matthew Butterick wrote:
> `raco test` will automatically test every .rkt and .scrbl file in a
> directory. Suppose I make `#lang foo` and thus many of my test files end with
> .foo. I would want all .foo files to be automatically tested as well. Is
>
whenever I get the itch to dream about gc, inevitably I end up at a
paper or other by Bacon; seems like Bacon is one of the go-to guys on
GC. random e.g.
http://researcher.watson.ibm.com/researcher/files/us-bacon/Bacon04Unified.pdf
--
You received this message because you are subscribed to the Go
Point in case: Greg Hendershott's recent blog post about adapting struct
constructors to use keyword arguments using syntax-parse.
http://www.greghendershott.com/2015/07/keyword-structs-revisited.html
On Mon, Jul 6, 2015 at 4:35 PM, Alexis King wrote:
> I’ll second Stephen’s point about keyword
I’ll second Stephen’s point about keyword arguments. They’re quite common in
idiomatic Racket, and they are probably the most direct way to address the
points you’ve mentioned.
Another tool that Racket gives you to make scripting very easy is the ability
to create fairly expressive DSLs with li
Just realized that the first link is not very useful. These might be
more informative:
http://docs.racket-lang.org/guide/application.html?q=keyword#%28part._keyword-args%29
http://docs.racket-lang.org/guide/contracts-general-functions.html?q=keyword#%28part._contracts-keywords%29
On Mon, Jul 6, 2
Racket has linguistic support for keyword arguments, which address
many of the issues you raised:
http://docs.racket-lang.org/guide/keywords.html
Would this help in your case?
Additional background: http://www.cs.utah.edu/plt/publications/scheme09-fb.pdf
On Mon, Jul 6, 2015 at 10:56 AM, John Car
A primary goal of the scripting work is that it should be easy to do easy
things. You shouldn't have to specify all the options if you just want to play
a sound or show a picture, but you should still be able to get at them when you
need them.
For the case of a sound effect, all of the followi
20 matches
Mail list logo
